import axios from 'axios'
import { MessageBox, Message } from 'element-ui'
import store from '@/store'
import qs from 'qs'
import { getToken } from '@/utils/auth'

// create an axios instance
const service = axios.create({
  baseURL: process.env.VUE_APP_BASE_API, // url = base url + request url
  withCredentials: true, // send cookies when cross-domain requests
  headers: {
    'Content-Type': 'application/x-www-form-urlencoded',
    'Access-Control-Allow-Origin': '*'
  },
  transformRequest: [(data) => {
    return qs.stringify(data)
  }],
  timeout: 50000 // request timeout
})

// request interceptor
service.interceptors.request.use(
  config => {
    // do something before request is sent
    let params = config.params
    let data = config.data
    if (store.getters.token) {
      // let each request carry token
      // ['X-Token'] is a custom headers key
      // please modify it according to the actual situation
      if (config.method === 'post' || config.method === 'POST') {
        data = {
          token: getToken(),
          ...data
        }
        config.data = data
        // config.data = qs.stringify(data)
        // config.headers['Content-Type'] = 'application/x-www-form-urlencoded;charset=UTF-8'
      } else if (config.method === 'get' || config.method === 'GET') {
        params = {
          token: getToken(),
          ...params
        }
        config.params = params
        // config.headers['Content-Type'] = 'application/json;charset=UTF-8'
      }
      config.headers['X-Token'] = getToken()
      // config.headers['Content-Type'] = 'application/json;charset=UTF-8'
      // config.headers['application/x-www-form-urlencoded;charset=utf-8']
      // 'Content-Type': 'application/json;charset=UTF-8'
      // Access-Control-Allow-Origin
    }
    return config
  },
  error => {
    // do something with request error
    console.log(error) // for debug
    return Promise.reject(error)
  }
)

// response interceptor
service.interceptors.response.use(
  /**
   * If you want to get http information such as headers or status
   * Please return  response => response
  */

  /**
   * Determine the request status by custom code
   * Here is just an example
   * You can also judge the status by HTTP Status Code
   */
  response => {
    const res = response.data
    // if the custom code is not 20000, it is judged as an error.
    if (res.respCode !== '000') {
      Message({
        message: res.respDesc || 'Error',
        type: 'error',
        duration: 5 * 1000
      })

      // 50008: Illegal token; 50012: Other clients logged in; 50014: Token expired;
      if (res.respCode === 50008 || res.respCode === 50012 || res.respCode === 50014 || res.respCode === '9999') {
        // to re-login
        MessageBox.confirm('您已经退出登录，是否要再次登录', '确认', {
          confirmButtonText: '再次登录',
          cancelButtonText: '取消',
          type: 'warning'
        }).then(() => {
          store.dispatch('user/resetToken').then(() => {
            location.reload()
          })
        })
      }
      return Promise.reject(new Error(res.respDesc || 'Error'))
    } else {
      return res.result
    }
  },
  error => {
    console.log('err' + error) // for debug
    Message({
      message: error.respDesc || '服务异常',
      type: 'error',
      duration: 5 * 1000
    })
    return Promise.reject(error)
  }
)

export default service
